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Finding the Fourth Proportional to 610,566.78, 842,569.62 and 338,590.80

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Solution

The fourth proportional to 610,566.78, 842,569.62 and 338,590.80 is: 467,248.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,566.78 : 842,569.62 = 338,590.80 : x
  2. Step 2: Convert to fraction form
    610,566.78/842,569.62 = 338,590.80/x
  3. Step 3: Cross multiply
    610,566.78x = 842,569.62 × 338,590.80
  4. Step 4: Simplify right side
    610,566.78x = 285,286,321,691.50
  5. Step 5: Solve for x
    x = 285,286,321,691.50/610,566.78
  6. Step 6: Final answer
    x = 467,248.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.